Mercedes-Benz commenced putting in auxiliary batteries from the early 2000s. These batteries are smaller sized than the main starter battery, in some cases generally known as capacitors due to their size.
Steer clear of a terminal limited. Potentially The main matter to remember all through a Mercedes battery substitute is to stop contact amongst the battery’s constructive and destructive terminals. Also, the optimistic Speak to with the battery mustn’t make contact with any steel portions of the vehicle.
Changing the 12V battery requires disconnecting the negative terminal‚ taking away the outdated battery‚ and installing the new a person. Generally connect the positive terminal 1st for safety.
This module is to blame for measuring the voltage. It handles the monitoring of the two the key and secondary batteries.
Access the auxiliary battery. Depending on its place, you may need to have to get rid of some panels or handles. In the case of underneath-seat places, You may have to slip or tilt the seat for much better access.
Wiring challenges or free connectors within the automobile’s controller spot community can mimic a battery malfunction. It not often indicates a fault Along with the community alone.
A failing main battery results in a car that gained’t start off, whereas an auxiliary battery malfunction may well only trigger electrical quirks till it truly is addressed.
To replace the 12V battery with your Mercedes-Benz‚ begin by disconnecting the unfavorable terminal to stop electrical shocks. Locate the battery‚ normally located in the motor compartment. Get rid of the retaining bracket and get out the aged battery.
I do all Mercedes Electrical System Fault Battery my own upkeep excluding the DCT oil. Which is coming because of in A different 8K miles. I figured I would ask the seller to look for BMS updates when I choose it in.
Regardless that the car starts when the auxiliary battery dies, an auxiliary battery malfunction appears over the dashboard. Normally, the vehicle operates and drives fine, Despite a nasty auxiliary battery.
If your Mercedes-Benz auto hesitates to activate eco start out/cease, or you detect flickering interior lights, the second battery could be the culprit.
In specialized conditions, the auxiliary battery malfunction might be because of various things, like:
I’ve currently mentioned the main reason to the Auxiliary Battery Malfunction message. In the majority of standard conditions, The difficulty will be the battery itself.
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